Solve x²-10x-20=0 using completing the square

x=5+-sq45

Step-by-step explanation:

X^2-10x-20=0

-10/2=-5^2=25

x^2-10x+25=20+25

(x-5)^2=45

sq(x-5)= x-5

x-5=+-sq45

x=5+-sq45

sq= squareroot symbol

0 is its x and y coordinate

step-by-step explanation:

i believe its "c" because all of the other options include a but it could be d because there is a way of financing with cash at certain places but its uncommon.